motorrevisie v8
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huib
motorrevisie v8
hallo ik heb een disco uit 2000 v8 met een lek onderblok wie kan mij vertellen of ik een nieuw onderblok moet hebben of dat ik deze eventueel kan reviseren d.m.v. het plaatsen van bussen
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Aad Koene
Re: motorrevisie v8
Wat lekt waar??
Aad Koene
LR S2a 109" Stawag 2,5 Tdi RHD Safari "Tinkerbell" <img src="[www.lrch.nl] width=220>
LR S1 86" Pick-Up LHD "Prik-Up"
<b>Meer Vragen is Meer Weten, Meer Weten is Meer Vragen</b>
Aad Koene
LR S2a 109" Stawag 2,5 Tdi RHD Safari "Tinkerbell" <img src="[www.lrch.nl] width=220>
LR S1 86" Pick-Up LHD "Prik-Up"
<b>Meer Vragen is Meer Weten, Meer Weten is Meer Vragen</b>
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huib
Re: motorrevisie v8
er schijnt in mijn cylinderbus een lek te zitten zegt de garage waardoor koelvloeistof het motorblok in loopt de een zegt dat er bussen in gestanst kunnen worden en de ander zegt dat dit onmogelijk is met dat type motor
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RagRover
Re: motorrevisie v8
Klinkt heel interessant!
grtzz
<a href="[www.3sbaars.nl];
<img src="[www.3sbaars.nl];
Rob Raggemetdiedrieblokkenentweevriendjes
grtzz
<a href="[www.3sbaars.nl];
<img src="[www.3sbaars.nl];
Rob Raggemetdiedrieblokkenentweevriendjes
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Dennis101
Re: motorrevisie v8
Lees dit:
Overheating starts with water loss. The early 3.9 and 4.2 (pre '95-'96) engines were basically an over-bored 3.5 casting with 4mm extra on the diameter of the liners. This caused a reduced thickness of aluminium between the water jacket and the cylinder bore. The subsequent water loss problem normally starts off as just a water light that appears once a month or so, then once a week, until it becomes a permanent feature. The normal unsuspecting owner will have by this time paid for heads to be skimmed and gaskets to be changed, and they will have spent a lot of money already. So, although the engine functions fine, it is a permanent worry leading towards a total engine failure.
Many might be excused for thinking that the overheating is caused by running the engine in a hot climate, or with a radiator problem, or even insufficient cooling fans or oil cooler, but we can assure you this is not normally the case.
3.9 & 4.2 The true & main reason these engines run very hot is due to the fuel/air ratio, or fuel mixture, that is controlled by the engine EFi computer (ECU Chip) from the factory. This was designed to run very lean through the mid range to make altitude driving or mid range emissions (tested in some countries) less of a problem, the upshot of this however is that when these engines are used on low quality or low octane fuels, or when the engines are upgraded with items even as minor as a free-flow air filter or exhaust headers & Cam/Head upgrades, although all of these are only mild upgrades, they will make a weak engine run even weaker and the problem will get closer!
The solution is simple (if it's not cracked already), fitting our Optimax or Tornado Eprom (ECU Chip) will give your engine the near perfect fuel/air ratio it deserves, thus giving lower engine internal temperatures and giving, without other modifications to all, 15% efficiency boost [power and economy} & also allow the upgrades you have already done to be beneficial at last, instead of being detrimental. 3.9 & 4.2 ECU info 'Click'
4.0 & 4.6 (new shape) suffer a similar but normally less dramatic problem although these engines are much stronger. The same air/fuel ratio problem will arise with low octane fuels, you will not normally suffer cracked blocks, but you will cause the liner to shift from its seat or cause sticky valve guides (partial seizure), and the solution is much the same as the 3.9 & 4.2 above, an ECU re-chip will sort it out and more Gems ECU info 'Click'
All cracked engines (blocks) are not normally repairable due to the fact that it will crack behind other liners, even if you could effectively repair the one at fault.
If you are undecided about where the problem actually is, then the next job would be to remove the heads, and if you see nothing suspect the worst (the surest way to tell if your engine is suffering from this problem is the fact that you can find nothing obviously wrong). You could have the heads & block pressure tested if you are still not convinced).
en dit eens:
[www.vislandrovers.nl]
Ziet er niet goed uit.
Dennis B.
Overheating starts with water loss. The early 3.9 and 4.2 (pre '95-'96) engines were basically an over-bored 3.5 casting with 4mm extra on the diameter of the liners. This caused a reduced thickness of aluminium between the water jacket and the cylinder bore. The subsequent water loss problem normally starts off as just a water light that appears once a month or so, then once a week, until it becomes a permanent feature. The normal unsuspecting owner will have by this time paid for heads to be skimmed and gaskets to be changed, and they will have spent a lot of money already. So, although the engine functions fine, it is a permanent worry leading towards a total engine failure.
Many might be excused for thinking that the overheating is caused by running the engine in a hot climate, or with a radiator problem, or even insufficient cooling fans or oil cooler, but we can assure you this is not normally the case.
3.9 & 4.2 The true & main reason these engines run very hot is due to the fuel/air ratio, or fuel mixture, that is controlled by the engine EFi computer (ECU Chip) from the factory. This was designed to run very lean through the mid range to make altitude driving or mid range emissions (tested in some countries) less of a problem, the upshot of this however is that when these engines are used on low quality or low octane fuels, or when the engines are upgraded with items even as minor as a free-flow air filter or exhaust headers & Cam/Head upgrades, although all of these are only mild upgrades, they will make a weak engine run even weaker and the problem will get closer!
The solution is simple (if it's not cracked already), fitting our Optimax or Tornado Eprom (ECU Chip) will give your engine the near perfect fuel/air ratio it deserves, thus giving lower engine internal temperatures and giving, without other modifications to all, 15% efficiency boost [power and economy} & also allow the upgrades you have already done to be beneficial at last, instead of being detrimental. 3.9 & 4.2 ECU info 'Click'
4.0 & 4.6 (new shape) suffer a similar but normally less dramatic problem although these engines are much stronger. The same air/fuel ratio problem will arise with low octane fuels, you will not normally suffer cracked blocks, but you will cause the liner to shift from its seat or cause sticky valve guides (partial seizure), and the solution is much the same as the 3.9 & 4.2 above, an ECU re-chip will sort it out and more Gems ECU info 'Click'
All cracked engines (blocks) are not normally repairable due to the fact that it will crack behind other liners, even if you could effectively repair the one at fault.
If you are undecided about where the problem actually is, then the next job would be to remove the heads, and if you see nothing suspect the worst (the surest way to tell if your engine is suffering from this problem is the fact that you can find nothing obviously wrong). You could have the heads & block pressure tested if you are still not convinced).
en dit eens:
[www.vislandrovers.nl]
Ziet er niet goed uit.
Dennis B.
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Bart74
Re: motorrevisie v8
plaatsen van bussen is wel mogelijk. Heb ik eens gezien en er adverteert iemand mee in een Engels Land Rover tijdschrift. Bedrijf heet geloof ik ACR.
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Dennis101
Re: motorrevisie v8
Dat klopt. alleen moet je wel een blok inleveren zonder scheuren volgens de voorwaarden op hun website.
De bussen die zij gebruiken zijn om scheurvorming te voorkomen, niet om een reeds gescheurd blok te repareren.
Dennis B.
De bussen die zij gebruiken zijn om scheurvorming te voorkomen, niet om een reeds gescheurd blok te repareren.
Dennis B.
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Frank RRV8 Eend merc 220D'73
Re: motorrevisie v8
Hoi
Kijk anders ffe in engeland, bijvoorbeeld bij deze jongens:
[www.turner-engineering.co.uk]
groetFrank
Kijk anders ffe in engeland, bijvoorbeeld bij deze jongens:
[www.turner-engineering.co.uk]
groetFrank
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Rene
Re: motorrevisie v8
Huib,
Ik denk dat reviseren een hele dure oplossing is.
Kijk eerst eens naar het motornummer (waar de oliepeilstok het blok in gaat)
Dan weet je naar wat voor motor je moet zoeken.
Laat mij even weten bij welke cilinder hij lekt.
050-5032331
Rene W.
[www.roversd1.nl]
Ik denk dat reviseren een hele dure oplossing is.
Kijk eerst eens naar het motornummer (waar de oliepeilstok het blok in gaat)
Dan weet je naar wat voor motor je moet zoeken.
Laat mij even weten bij welke cilinder hij lekt.
050-5032331
Rene W.
[www.roversd1.nl]